No Start?

Truck listed above has a2.7L 3RZ. Have 48 PSI at fuel delivery pipe when cranking, Injectors are clicking when cranking according to inspection with long screwdriver to ear, spark and compression seem fine because engine runs for a few seconds when shooting starting fluid into air intake. Just finished a valve job and a thorough cleaning of just about every nook and cranny. Engine was running fine before work but had oil leaking from the oil pump and who else knows where. Didn't mess with crankshaft and pistons but replaced just about every gasket and inspected everything I could while torn down. Installed new oil pump, water pump, harmonic balancer, two coolant temp sensors, EGR valve, spark plugs, plug wires, and injectors. Replaced all vacuum hoses. Thoroughly cleaned throttle body and intake plenum all vacuum valves and sensors and their connections. Crankshaft position sensor test within ohms specs. Cleaned MAF sensor which does fluctuate voltage with air blown through venturi. Distributor coil test within ohms specs. Waiting on OBD2 scanner from Amazon to check error codes. Was certain I got timing chain gears set correctly but now I am second guessing myself. Could timing be off even though engine runs with starting fluid? Could injectors not be firing even though clicking or maybe just not opening enough to pass fuel? I am baffled. What do you think could be my problem?